Update DataStore.py
Merge pull request #30 from RaymanJr/Worldcoin

Update DataStore.py
Update copyright and contact info for team ownership.
Bug fix: KeyError: 'unlinked_count' in import_block.
Merge pull request #28 from dermoth/master

Add --no-load config option
Fix string index out of range doing catch_up

This fixes bitcoin-abe issue #34